DQ-quadrature power supply coil sets with large tolerances for wireless stationary EV chargers

Jeong, Seog Y.; Choi, Su Yeon; Sonapreetha, M. R.; Rim, Chun T.

doi:10.1109/wow.2015.7132800

Cited by 13 publications

(7 citation statements)

References 18 publications

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“…And then the SS topology combined with VSI topology is selected for this system. In addition, the system operating frequency is chosen as 85.5 kHz, which is aimed to satisfy the standard J2954 (nominal frequency range is 81.38~90.00 kHz for light-duty passenger electric vehicle) drafted by the society of automotive engineers (SAE) task force [39].…”

Section: A System Structurementioning

confidence: 99%

A 3-kW Wireless Power Transfer System for Sightseeing Car Supercapacitor Charge

Zhu

Jiang

et al. 2017

IEEE Trans. Power Electron.

307

133

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Abstract--Wireless Power Transfer (WPT) is the preferred charging method for electric vehicles (EVs) powered by battery and supercapacitor. In this paper, a novel WPT system with constant current charging capability for sightseeing car with supercapacitor storage is designed. Firstly, an optimized magnetic coupler using ferrite cores and magnetic shielding structure are proposed to ensure stable power transfer and high efficiency. Compared with the traditional planar shape ferrite core coupler, the proposed magnetic coupler requires lesser ferrite material without degrading the performance of the WPT system. Secondly, the model of supercapacitor is applied to the WPT system and the relationship between equivalent load resistances of supercapacitor and charging time is analyzed in detail. Then, a Buck converter with PI controller is implemented on the secondary side to maintain constant charging current for the variable load. Finally, the proposed design is verified by experiments. Constant charging current of 31.5 A across transfer distance of 15 cm is achieved. The peak transfer power and system efficiency are 2.86 kW and 88.05%, respectively.Index Terms--Charging current regulation, magnetic coupler, supercapacitor (SC), variable load, wireless power transfer (WPT).

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Section: A System Structurementioning

confidence: 99%

A 3-kW Wireless Power Transfer System for Sightseeing Car Supercapacitor Charge

Zhu

Jiang

et al. 2017

IEEE Trans. Power Electron.

307

133

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“…A large number of coupler topologies for IPT based EV charging is reported in literature [5]- [8]. Based on coil winding S. Bandyopadhyay, J. Dong, and P. Bauer are with the DCE&S/EEMCS, Technische Universiteit Delft, Delft 2624 CP, The Netherlands (e-mail:, s.bandyopadhyay-1@tudelft.nl; j.dong-4@tudelft.nl; p.bauer@tudelft.nl).…”

Section: Introductionmentioning

confidence: 99%

“…Digital Object Identifier 10.1109/TVT.2019.2909566 strategy, there can be two types of lumped IPT charge pads: a) Solenoid or double sided flux couplers [7], [9] and b) planar or single-sided flux couplers [5]. Planar couplers can be further classified into two families based on fundamental flux path: a) non-polarized couplers like circular and rectangular geometries [10]- [12] and b) multi-coil polarized couplers like double D (DD) [6], [13], bi-polar pad (BPP) [14], and double D-Quadrature (DDQ) [5], [8], [15]. Comparisons between different concepts are found in several publications [16]- [19].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Magnetic Couplers for IPT-Based EV Charging Using Multi-Objective Optimization

Bandyopadhyay

Venugopal

Dong

et al. 2019

IEEE Trans. Veh. Technol.

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Inductive power transfer (IPT) is becoming increasingly popular in stationary electric vehicle (EV) charging systems. In this paper, the influence of the different IPT coupler geometries on the performance factors such as efficiency, power density, misalignment tolerance, and stray field is studied. Four different coupler topologies, namely the circular, rectangular, double-D (DD-DD), and the double-D transmitter with double-D-quadrature receiver (DD-DDQ) are considered in this study. The electromagnetic behavior of the couplers is modeled using three-dimensional finiteelement method, which is validated by experiments on a laboratory prototype. A multi-objective optimization (MOO) framework is developed to analyze the Pareto tradeoffs between conflicting performance metrics for the couplers. Optimization results depict that the circular topology performs best among the selected topologies regarding higher coupling coefficient, and efficiency for similar active mass and coupler area. Circular and rectangular couplers perform better than the polarized couplers like DD-DD and DD-DDQ regarding stray field exposure in both vertical and lateral direction of the coupler position in the EV. However, polarized couplers show more tolerance toward misalignment compared to circular and rectangular couplers. Thus, this study provides information regarding the specific strengths and weaknesses of different coupler topologies, which can be used during the initial design phase.

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“…To match the plug-in charging efficiencies, IPT designs require highly efficient magnetic couplers. There is a large number of coupler topologies for IPT based EV charging reported in literature [5]- [8]. However, a proper classification structure to incorporate all possible topologies is still missing.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Optimized Chargepads for Wireless EV Charging Application

Bandyopadhyay¹,

Dong²,

Qin³

et al. 2019

2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia)

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Inductive power transfer (IPT) is becoming increasingly popular in stationary electric vehicle charging systems. In this paper, the influence of the different IPT coupler geometries on the performance factors efficiency, power density, misalignment tolerance, and stray field is studied. Five different coupler topologies namely the circular, rectangular, double-D (DD-DD) and the double-D transmitter with double-D-Quadrature receiver (DD-DDQ) are considered in this study. The electromagnetic behavior of the couplers is modeled using three-dimensional finite element analysis. To ensure a fair quantitative comparison, a multi-objective optimization framework is developed to analyze the Pareto trade-offs between conflicting performance metrics like power densities, efficiencies, and misalignment tolerance for all the considered coupler topologies.

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DQ-quadrature power supply coil sets with large tolerances for wireless stationary EV chargers

Cited by 13 publications

References 18 publications

A 3-kW Wireless Power Transfer System for Sightseeing Car Supercapacitor Charge

A 3-kW Wireless Power Transfer System for Sightseeing Car Supercapacitor Charge

Comparison of Magnetic Couplers for IPT-Based EV Charging Using Multi-Objective Optimization

Comparison of Optimized Chargepads for Wireless EV Charging Application

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